Playing to the crowd. Gesturing after 3s. Wow. These are all things none of use have ever seen before on a basketball court. It's like Nick Van Exel and Steve Logan never existed.
Seriously though...I've never minded a bit of that if it's done with a purpose. Troy has been asked to be the leader of the team and I'm sure he is trying to get some of his more sedate teammates into the game. Some of you might disagree but I was happy to see a little swagger from someone.
Revving up the crowd is one thing. Showboating is completely different.
Standing still with your arms in the air motioning to the crowd while play continues is showboating. Flexing your muscles to the crowd after a dunk while the other team is heading the other way with the basketball is showboating. Chest bumping with teammates or waving to the crowd to get on their feet (as long as you're still focused on what you're supposed to be doing) is another.
I don't mind celebrating great plays...heck I encourage it. When it's done properly it works. When celebrating leads to a technical or a loss of concentration...it can cancel out whatever good just happened.